Missing tweets

For some bizarre reason, a series of tweets I made to ConservativeGal (twitter/web) got eaten in twitter about 5 minutes ago. Her tweet to me no longer shows in my @Mentions section, and my tweets to her have disappeared off of everything except for search. Ergo, I post the missing tweets in this graphic:

Is this...er... normal?

Update, 5:00pm: Okay, so by following her the tweet she sent magically reappears in my @Mentions section, but mine are still missing. Odd x 10